SPATIAL NOISE REDUCTION CIRCUIT AND APPROACH THEREFOR
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United States of America Patent
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Issued Date -
Oct 20, 2011
app pub date -
Sep 4, 2009
filing date -
Sep 4, 2008
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Abandoned
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Abstract
Video data is processed according to grid-based characteristics. According to an example embodiment of the present invention, regions of an image centered on a horizontal and/or vertical grid are identified. For each of these regions, video data representing central sub-regions therein is filtered to mitigate blocking artifacts. These approaches may be carried out upon regions including a block of pixels, with central sub-regions including a centrally-located pixel and other pixels adjacent thereto. These approaches may also be carried out on video data such as a compressed bitstream, with aspects of the grid identification and filtering based on one or both of the compressed bitstream and decoded data therefrom.
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